Bug prevents jumping.

[DanielTheSilly]

Steps to reproduce:
Pick stage 2.
Set a block with 'e' as close as you can to the wall.
Hop on the block.
Hold right and attempt to jump.

Note this does NOT work on the left side of walls. You may notice the block wiggling as you try to jump. That leads me to suspect there is a hitbox issue with the block you are standing on.